skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on October 29, 2019

Title: Regular instantons in the Eddington-inspired-Born-Infeld gravity: Lorentzian wormholes from bubble nucleations

Abstract

The O(4)-symmetric regular instanton solutions are studied within the framework of the Eddington-inspired-Born-Infeld gravity (EiBI). Here we find that the behavior of the solution would deviate from that in Einstein gravity when the kinetic energy of the scalar field is sufficiently large. The tunneling probability is calculated numerically in different parameter space. We find that the tunneling probability would increase with the Born-Infeld coupling constant, which is assumed to be positive in this paper. Furthermore, we discover a neck feature in the physical instanton solutions when the kinetic energy of the scalar field is sufficiently large. This feature can be interpreted as a Lorentzian time-like wormhole geometry formed during the bubble materialization.

Authors:
 [1];  [2];  [3];  [4]
  1. Univ. of the Basque Country (UPV/EHU), Bilbao (Spain). Dept. of Theoretical Physics; Basque Foundation for Science (Ikerbasque), Bilbao (Spain)
  2. National Taiwan Univ., Taipei (Taiwan). Dept. of Physics. Center for Theoretical Sciences. Leung Center for Cosmology and Particle Astrophysics (LeCosPA)
  3. National Taiwan Univ., Taipei (Taiwan). Dept. of Physics. Center for Theoretical Sciences. Leung Center for Cosmology and Particle Astrophysics (LeCosPA); SLAC National Accelerator Lab., Menlo Park, CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology
  4. Asia Pacific Center for Theoretical Physics, Pohang (Korea, Republic of); Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of). Dept. of Physics
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of the Basque Country (UPV/EHU), Bilbao (Spain); Basque Foundation for Science (Ikerbasque), Bilbao (Spain); National Taiwan Univ., Taipei (Taiwan); Asia Pacific Center for Theoretical Physics, Pohang (Korea, Republic of); Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of)
Sponsoring Org.:
USDOE; Basque Foundation for Science (Ikerbasque) (Spain); Basque Government (Spain); Ministry of Economy and Business (MINECO) (Spain); European Regional Development Fund (ERDF); Taiwan National Science Council; Ministry of Education, Science, and Technology (Korea, Republic of); National Research Foundation of Korea (NRF)
OSTI Identifier:
1490416
Grant/Contract Number:  
AC02-76SF00515; IT956-16; FIS2017-85076-P; NSC 97-2112-M-002-026-MY3; 2018R1D1A1B07049126
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2018; Journal Issue: 10; Journal ID: ISSN 1475-7516
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; modified gravity; physics of the early universe; quantum cosmology; wormholes

Citation Formats

Bouhmadi-López, Mariam, Chen, Che-Yu, Chen, Pisin, and Yeom, Dong-han. Regular instantons in the Eddington-inspired-Born-Infeld gravity: Lorentzian wormholes from bubble nucleations. United States: N. p., 2018. Web. doi:10.1088/1475-7516/2018/10/056.
Bouhmadi-López, Mariam, Chen, Che-Yu, Chen, Pisin, & Yeom, Dong-han. Regular instantons in the Eddington-inspired-Born-Infeld gravity: Lorentzian wormholes from bubble nucleations. United States. doi:10.1088/1475-7516/2018/10/056.
Bouhmadi-López, Mariam, Chen, Che-Yu, Chen, Pisin, and Yeom, Dong-han. Mon . "Regular instantons in the Eddington-inspired-Born-Infeld gravity: Lorentzian wormholes from bubble nucleations". United States. doi:10.1088/1475-7516/2018/10/056.
@article{osti_1490416,
title = {Regular instantons in the Eddington-inspired-Born-Infeld gravity: Lorentzian wormholes from bubble nucleations},
author = {Bouhmadi-López, Mariam and Chen, Che-Yu and Chen, Pisin and Yeom, Dong-han},
abstractNote = {The O(4)-symmetric regular instanton solutions are studied within the framework of the Eddington-inspired-Born-Infeld gravity (EiBI). Here we find that the behavior of the solution would deviate from that in Einstein gravity when the kinetic energy of the scalar field is sufficiently large. The tunneling probability is calculated numerically in different parameter space. We find that the tunneling probability would increase with the Born-Infeld coupling constant, which is assumed to be positive in this paper. Furthermore, we discover a neck feature in the physical instanton solutions when the kinetic energy of the scalar field is sufficiently large. This feature can be interpreted as a Lorentzian time-like wormhole geometry formed during the bubble materialization.},
doi = {10.1088/1475-7516/2018/10/056},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 10,
volume = 2018,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on October 29, 2019
Publisher's Version of Record

Save / Share: